Audio system



FIG. 1 is a front view of the audio system according to the present invention.

FIG. 2 is a rear view of the audio system of FIG. 1.

FIG. 3 is a left side view of the audio system of FIG. 1.

FIG. 4 is a right side view of the audio system of FIG. 1.

FIG. 5 is a top side view of the audio system of FIG. 1.

FIG. 6 is a bottom side view of the audio system of FIG. 1; and,

FIG. 7 is a left and top perspective view of the audio system of FIG. 1.

The broken lines in FIG. 2 are for illustrative purpose only and form no part of the claimed design. 

The ornamental design for an audio system, as shown and described. 